1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.security.screenlock; 18 19 import static android.app.admin.DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; 20 21 import android.content.Context; 22 import android.os.UserHandle; 23 import android.support.v7.preference.Preference; 24 import android.support.v7.preference.PreferenceScreen; 25 26 import com.android.internal.widget.LockPatternUtils; 27 import com.android.settings.core.BasePreferenceController; 28 import com.android.settings.notification.LockScreenNotificationPreferenceController; 29 import com.android.settings.overlay.FeatureFactory; 30 import com.android.settingslib.core.lifecycle.Lifecycle; 31 import com.android.settingslib.core.lifecycle.LifecycleObserver; 32 import com.android.settingslib.core.lifecycle.events.OnResume; 33 34 public class LockScreenPreferenceController extends BasePreferenceController implements 35 LifecycleObserver, OnResume { 36 37 static final String KEY_LOCKSCREEN_PREFERENCES = "lockscreen_preferences"; 38 39 private static final int MY_USER_ID = UserHandle.myUserId(); 40 private final LockPatternUtils mLockPatternUtils; 41 private Preference mPreference; 42 LockScreenPreferenceController(Context context, Lifecycle lifecycle)43 public LockScreenPreferenceController(Context context, Lifecycle lifecycle) { 44 super(context, KEY_LOCKSCREEN_PREFERENCES); 45 mLockPatternUtils = FeatureFactory.getFactory(context) 46 .getSecurityFeatureProvider().getLockPatternUtils(context); 47 if (lifecycle != null) { 48 lifecycle.addObserver(this); 49 } 50 } 51 52 @Override displayPreference(PreferenceScreen screen)53 public void displayPreference(PreferenceScreen screen) { 54 super.displayPreference(screen); 55 mPreference = screen.findPreference(getPreferenceKey()); 56 } 57 58 @Override getAvailabilityStatus()59 public int getAvailabilityStatus() { 60 if (!mLockPatternUtils.isSecure(MY_USER_ID)) { 61 return mLockPatternUtils.isLockScreenDisabled(MY_USER_ID) 62 ? DISABLED_FOR_USER : AVAILABLE; 63 } else { 64 return mLockPatternUtils.getKeyguardStoredPasswordQuality(MY_USER_ID) 65 == PASSWORD_QUALITY_UNSPECIFIED 66 ? DISABLED_FOR_USER : AVAILABLE; 67 } 68 } 69 70 @Override updateState(Preference preference)71 public void updateState(Preference preference) { 72 preference.setSummary( 73 LockScreenNotificationPreferenceController.getSummaryResource(mContext)); 74 } 75 76 @Override onResume()77 public void onResume() { 78 mPreference.setVisible(isAvailable()); 79 } 80 } 81